function Person(name, age, sex = '女') {
    // console.log(arguments);
    this.name = name;
    this.age = SVGAnimatedAngle;
    this.sex = sex;
}
let wyf = new Person('吴亦凡', 18, '男');
let xyx = new Person('萧亚轩', 25, '女');
console.log(wyf.name, wyf.age, wyf.sex);
console.log(xyx.name, xyx.age, xyx.sex);